mirror of
https://github.com/ethereum/go-ethereum.git
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71e8e27f84
* all: remove SDK node * cmd: remove XDCXDBEngineFlag * cmd: remove XDCXDBConnectionUrlFlag * cmd, XDCx: remove XDCXDBReplicaSetNameFlag * XDCx: remove ConnectionUrl * all: remove mongodb support * cmd: remove XDCXEnabledFlag
53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
// Copyright 2019 The XDPoSChain Authors
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// This file is part of the Core XDPoSChain infrastructure
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// https://XDPoSChain.com
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// Package XDCxDAO provides an interface to work with XDCx database, including leveldb for masternode and mongodb for SDK node
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package XDCxDAO
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import (
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"github.com/XinFinOrg/XDPoSChain/common"
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"github.com/XinFinOrg/XDPoSChain/ethdb"
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)
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const defaultCacheLimit = 1024
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type XDCXDAO interface {
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// for both leveldb and mongodb
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IsEmptyKey(key []byte) bool
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Close() error
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GetObject(hash common.Hash, val interface{}) (interface{}, error)
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// basic XDCx
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InitBulk()
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CommitBulk() error
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// XDCx lending
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InitLendingBulk()
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CommitLendingBulk() error
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// leveldb methods
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Put(key []byte, value []byte) error
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Get(key []byte) ([]byte, error)
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Has(key []byte) (bool, error)
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Delete(key []byte) error
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NewBatch() ethdb.Batch
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NewBatchWithSize(size int) ethdb.Batch
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HasAncient(kind string, number uint64) (bool, error)
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Ancient(kind string, number uint64) ([]byte, error)
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Ancients() (uint64, error)
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AncientSize(kind string) (uint64, error)
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AppendAncient(number uint64, hash, header, body, receipt, td []byte) error
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TruncateAncients(n uint64) error
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Sync() error
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NewIterator(prefix []byte, start []byte) ethdb.Iterator
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Stat(property string) (string, error)
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Compact(start []byte, limit []byte) error
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}
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// use alloc to prevent reference manipulation
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func EmptyKey() []byte {
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key := make([]byte, common.HashLength)
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return key
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}
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